Improvement in machines for sheathing curved molding-strips



B. F. GALE.

Machines for She'athing Carved Molding Strips. N0,148,H5, Patented March3.1874.

lll/ll /ll UII Pwr/9553515.

. VEN TOR UNITED STATES PATENT OFFICE.

BENJAMIN F. GAL'E, OF BOSTON, MASSACHUSETTS.

IMPROVEMENT IN MACHINES FOR SHEATHING CURVED MOLDING-STRIPS.

Specification forming part of Letters Patent No. 148,115, dated March 3, 1874; application led w- May 15, 1873.

To all whom it may concern.-

Be it known that I, BENJAMIN F. GALE, of Boston, State of Massachusetts, have invented an Improved Manufacture of Metal-Sheathed lIIoldingStrips, and machines for producing the same, of which the following is a speciication:

This invention relates to a new machine for producing metalsheathed molding strips, which shall be curved in the direction of their length 5 and consists principally of a die such as nowusedformalringstraight metal-sheathed strips, and a form for a rest or bearing for the molding-strip, the construction and operation of which will be fully hereinafter described.

p, In the drawings, Figure l is an illustration of one form of the molding-strip as made by my machine. Fig. 2 is a plan view of the machine Fig.V 3, a crosssection on the line x .r of Fig. 2 5 Fi'g. 4, a detail view of the die; Fig. 5, a plan View of a strip of sheet metal cut out as for sheathing a molding-strip; Figs. Gand 7, views showing modifications of my invention. Fig. 8 shows theY form and die reversed to sheath the strip when it has a different curve from that shown.

B represents my improved machine, which is composed of a die, O, and a for1n, D. The die is of the ordinary form used for sheathing straight molding-strips with sheet metal, and its opening m corresponds in outline to a cross-section of the molding-strip. The form D is circular in shape, and has a groove, n, around its periphery, and is arranged to be turned freely in a horizontal plane upon a fixed center pin, E.- F is a stationary standard, to which is bolted or otherwise secured the die O, its opening m being arranged in such respect to the groove u that a molding-strip drawn through the die-opening will bear or rest tangentially against the periphery of the form, as .in Fig. 3. A stop, O, is suitably located for the arm p of the form D to abut against, and hold the form from moving beyond it. r is a windlass for drawing a molding and sheet-metal strips through the die, and y a Windlassvdrum for revolving the form,

both drums having suitable handles for operating them, and with suitable rope, or other line-connections for the purpose stated, the rope for operating the form D being passed partially around and lies Within the groove x in the lower part of the same.

In making the improved metal-sheathed moldingstrips, the covering or sheathing of l, the straight part c of the strip is accomplished by drawing the same through the die by means of the drum r, as shown in Fig. .2, and the sheathing of the curved portion is acconr plished by revolving the form D in the direction indicated by the arrow, Fig. 2, through the medium of the drum y.

Instead of arranging the form D in a horizontal position, it may be arranged in a vertical position, as represented in Figs. 6 and 7, being supported by standards.

The sheet-metal sheathed molding-strip A produced by this machine consists of a body or core, a, which Inay be of wood or metal, and a sheet-metal sheathing, b.

In Fig. lis represented one form of sheathed molding-strip produced by the machine, which possesses a straight portion, o, and a curved portion, d, and is semicircular in form, as at f, and angular, as at g.'

I have shown the form D as having two peripheral grooves, a; but it is obvious that but one is necessary, and for producing a curve running in a direction opposite to that shown in Fig. 2, it is only necessary to bring the standard F to a rest against the stop w, turn the form D over, and reverse the direction in which the operatingrope extends around the form, as shown in Fig. 8.

What I claim is- A machine for making metal-sheathed moldin gstrips curved in the direction of their length,

consisting of a die, O, and aform, D, combined to operate substantially as described.

BENJAMIN F. GALE.

Witnesses:

ALBERT W. BROWN, EDWIN W. BROWN. 

